Fountain-pen.



M.. 0. BORBEGK. FOUNTAIN PEN.

APPLICATION FILED MAY 15, 1911.

1,024,245. Patented A111123, 1912.

coLuMalA PLANaaR/PH co., WASHING-NJN. D. s:A

UNTTE@ STATES PATENT @FTSE MARTIN O. BORBECK, OF TRACY, MINNESOTA.

FOUNTAIN-PEN.

To all whom it may concern."

Be it known that l, MARTIN O. Bonnnon, a citizen of the United States of America, and a resident of rIracy, in the county of Lyon and State of Minnesota, have invented certain new and useful Improvements in Fountain-Pens, of which the following is a specification.

The invention relates to certain improvements in fountain-pens and more especially in that class of such devices which have filling means contained within them as a part of the pen, so that the pen may be readily and conveniently filled with ink; and the object of the invention is to provide a pen of this general character having filling means of an improved and simplilied nature by the employment of which the operation of filling is capable of being more conveniently performed, the improved filling means being of such character as not to interfere in any way with the free handling of the pen in writing, producing an extremely simple pen which is especially well adapted for use, since the filling means has no parts projecting upon the exterior of the barrel or cap which might catch in the clothing or which when pressed would unless locked cause ink to be spilled from the pen in writing or on the insertion or withdrawal of the pen in or from the pocket, and has the neatness of appearance of a common standard style pen.

The invention consists in certain novel features of the construction, combination, and arrangement of the several parts of the improved fountain-pen and its lling means whereby certain important advantages are attained and the device is made simpler, cheaper, neater, and otherwise better adapted and more convenient for use, all of which will be hereinafter fully set forth.

The novel features of the invention will be carefully defined in the claim.

In the accompanying drawings, which serve to illustrate my invention; Figure (1) is a side elevation; Fig. (2) is a longitudinal partly sectional view; Fig. is a longitudinal partly sectional view; Fig. (4) is a side elevation of press bar; Fig. (5) is a cross sectional view of barrel showing how the elastic ink-reservoir may be collapsed by means of the press-button.

Fig. (1) shows cap 1, barrel 2 which is composed of a hollow cylindrical tube open at both ends having a hole or opening 3,

Specification of Letters Patent.

Application led May 15, 1911.

PatentedApr. 23, 1912. serial No. 627,129.

and surface of tube 4. At one end of barrel 2 a removable presser-button 5 is attached and makes a part thereof.

Fig. (2) shows section 8, holding pen 6, and feed 7 in the usual way; section 8 being attached to barrel 2 by the slip joint or, screw thread common in this style of pens. 11 is a compressible ink reservoir extending lengthwise within the cylindrical hollow of barrel 2 and attached to section S, at nipple 10. Along one side and resting on compressible ink reservoir 11 is an elongated plate or strip 12, of metal, or made of any desirable material; plate or press-bar 12 in about its center having a projecting tube shape body 4, having an inside thread 17; tube 4 being the same shape as opening 3, in barrel 2, and made to fit therein, being a trifle smaller and extending nearly to the surface of opening 4, in the side of barrel 2 and held in this position by ink-reservoir 11, as shown in drawing. Presser-button 5, as shown in drawings is made in two parts. Shank 14 has one end threaded as at 13, and the other end is secured friction tight in a hole in presser button 5, or in any other desirable way, shank 14 being made of any desirable metal. The presser-button 5 is of hard rubber.

Fig. (3) shows cap removed, presser-button 5 being detached from threads 15 in barrel 2 and attached to threads 17 in tube 4 of plate or presser-bar 12 in the usual way, where threads are used. Presser button 5 may be attached to tube 4, by a slip joint, or in any other feasible way if desired, but threads are preferred. Shank 14, of presserbutton 5, is of the same diameter and shape as tube 4, of presser-bar 12. When pressure is applied, shank 14 of presser-button 5 enters opening 3 in barrel 2, the length of shank 14, which is made in length according to diameter of bore in barrel 2, being long enough to allow the presser-bar 12, to expel the air in collapsible ink reservoir, as shown in Fig. 5; if feeding device be dipped in an ink well or bottle in the usual manner, as is required with self filling pens, by releasing pressure on presser-button 5, the ink reservoir will expand by its own elasticity and draw in a supply of ink, replacing air expelled. Shank 14 guides tube 4 of pressure bar 12 in entering opening 3 in barrel 2, pressure-bar 12 being held in this position by reservoir 11. A removable presser-button 5 is attached to one end of barrel 2 by means of threads 16 of presserbutton 5, to threads 15 in barrel 2, or may be made a slip joint if so desired; the former preferred.

Fig. 4 shows a tubular projection 4: located in about the middle of the presserbar 12.

The improved fountain-pen, according to my invention, is so constructed as to make it very simple in operation, and inexpensive to make, as the barrel is made from hollow tube, and is constructed so as not to be liable to become easily deranged or broken, thus dispensing with repairs to a large extent. I wish particularly to emphasize the neatness of construction, there being no parts projecting upon the exterior of the pen (neither barrel or cap) and the only visible sign of the self filling arrangement, when the pen is in use, is the small hole in side of barrel, .which is so small that it is impossible for any object to accidentally project into it and press the press-bar down, which would collapse ink-receptacle, or reservoir, causing ink to 'be spilled. It will also be obvious from the above description that the improved fountain-pen is capable of considerable modification without material departure from the principles and spirit of the invention, and for this reason I do not wish to be understood as limiting myself to the precise form and arrangement of the several parts of the device as herein I set forth in carrying out my invention in practice except as set forth in the claim.

Having thus described my invention what I claim, and desire to secure byLetters Patent, is:

A fountain pen consisting of a cylindrical barrel open at both ends and having a small opening in its side, and a collapsible ink reservoir contained in the barrel, and a presser-bar extending along one side of the barrel, with a tube shaped projection on its upper surface which extends upwardly into the opening in the side of the barrel in close proximity to the surface thereof, and having threads on the insideyand a presserbut-ton which is attached to one of the open ends of the barrel by means of threads on its exterior engaging corresponding threads on the interior of said ends of the barrel7 said presser-button having a pin or projection extending downwardly, which has threads on its end adapted to be attached to the presser-bar by means of Vsaid threads engaging the threads on the inside of the tube of the presser-bar.

Signed at Tracy, Minnesotal this 10th day of May, 1911.

MARTIN O. BORBECK. Vitnesses:

A. R. ENGLISH, J. L. TUTTLE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

